Summary

Many cable television operators are upgrading their facilities to provide two-way capability and using this capability to provide high‑speed IP data services per ITU-T Recs J.83 and J.112. These operators now want to expand the capability of this delivery platform to include telephony. This Recommendation is one of a series of Recommendations required to achieve this goal. It provides for the dynamic quality of service needed in many real-time applications.

This Recommendation is revised as to comply with a number of relevant industry developments since ITU-T Rec. J.163 was released and in conformity with the current version of the CableLabs PacketCable^TM specification.

Due to a change in the technological landscape within Europe, Annex A is removed from the Recommendation as it is no longer needed. As part of this change, Annex B is folded into the main body of the Recommendation and the term "AN" (Access Node) is replaced by "CMTS" (Cable Modem Termination System) throughout.